Weather in Hiroshima: May
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Average day temperature: | 72.7°F |
| Average night temperature: | 56.8°F | |
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Sea water temperature: | 63.3°F |
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Number of sunny days: | 16 days |
| Day length: | 13.6 - 14.3 hours | |
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Number of rainy days: | 6 days |
| Precipitation totals: | 5.3 in. | |
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forecast
| Hiroshima |
temperature
| Hiroshima |
Air temperature in May, °F
The highest day temperature during May of 2026 was 79°F. At the same time the lowest night temperature was 46°F. Daily and nightly averages during May were 70.0°F and 57.3°F.
Sea water temperature in Hiroshima in May, °F
The average sea water temperature in May of 2026 was 64.6°F. The highest and lowest sea temperatures during the month were 69.1°F and 57.9°F.
Mostly all days in May are sunny but cloudy days are also possible.
Precipitation total in May, in.
Precipitation total value in Hiroshima in May is 5.9 in. Other months of the year show relatively similar values.
The average wind speed value in May is 4.6 mph It makes May one of the least windy months of the year.
This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in May is: 8.2.
Best time for vacation in Hiroshima
Hiroshima on a weather map
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